See your runtime double
How we calculate it - check our maths
A guide only - runtime depends on your exact gear, battery health and conditions. Always pair two matching packs.
See it in action
Full specifications
| What it does | Connects two matching 18V tool batteries in parallel for use with the Volt Dropper |
|---|---|
| Connection | Dual-battery parallel connection (requires two matching batteries) |
| Battery type | 18V lithium-ion (Li-ion) - 2.0Ah up to 12Ah+ |
| Output | Dependent on your Volt Dropper settings and connected batteries |
| Housing | Rugged ABS with reinforced, brand-specific locking slots |
| Dimensions | Approx. 95mm (L) × 90mm (W) × 55mm (H) |
| Weight | Approx. 150g (without batteries) |
| Battery compatibility | Milwaukee, Makita, DeWalt, Ozito/Einhell, HiKOKI/Hitachi, Stanley/Craftsman, Bosch (GBA & PBA), Black & Decker/Porter Cable, WORX - each adapter brand-specific, not cross-compatible |
| In the box | 1 × Double Battery Adapter (selected brand) · batteries, Volt Dropper & tools not included |
| Warranty & support | 12-month warranty against defects · Australian owned & operated · 30-day returns |
How it works
Best-use guide
A few simple habits keep your packs healthy and your runtime strong. Always pair two matching batteries.
Same brand, voltage and capacity - e.g. two 18V 5.0Ah packs.
Get both packs within ~0.2–0.3V of each other before connecting.
Different internal resistance causes uneven discharge and lost performance.
Free of dust, debris and corrosion for a clean, secure connection.
Remove the packs when you’re done to prevent slow drain.
Packs should stay cool. Stop use if either feels unusually hot.
More runtime, less hassle
Two 18V packs in parallel give the same voltage with twice the amp-hours.
Reinforced locking slots matched to your exact 18V platform - secure and rattle-free.
Stable delivery spreads the draw across both packs, easing strain on each battery.
Tough ABS housing built to take the knocks of real-world outdoor use.